Improvement in injectors for steam-boilers



W. LMESSINGER'. INJECTORS FOR STEAM-BOITIERS.

Patented Feb. 15

UNITED STATES PATENTA OEErcE.

WILLIAM T. MESSINGEE, or SOME-EVILLE, MASSACHUSETTS.

l IMPRovEMENT IN'INJEcToRs FOR 'STEAM-Bodens.

Specification forming part of Letters Patent No.173,488, dated February 15, 1876 application led Y January 2e, 1ere.

To all whom itmay concern:

Be it known that L' WILLIAM T. MESSIN- GER, of Somerville, of the county of Middlesex aud State of Massachusetts, have'invented a new and useful Improvement in Injectors for Steam-Boilers; and do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of which- Figure 1 isa vertical and transverse section, Fig. 2 a horizontal section, andFig. 3 a longitudinal section, of my improvement andthe parts ofthe injector to which itis applied. n

The invention especially relates to the injector for which I have recently-to'wit, on

December l, llv--ap'plied for a patent,'which was allowed me on or about December 27, 1875.

The 'invention described in .my said application had no means of regulating the admission ofthe Steam to the internal nozzle,"

though its admission to the external nozzle could be regulated by the cock or valve thereof.

In carrying out my present invention I extend from the valve a circularly-curved gate, and'provide-the educt of the lower 'chamber 'of the valve-case with a circularly-curved seat for such gate to wor-l against. On revolving the valve t0 open it or raise it oft' its seat the gate will be turned with such valve, and may be made to more or less close the eduction of its seat-.

In the drawings, the internal and external nozzles are represented at C and D, the inner one, D, being arranged concentrically Within the outer one, C, and to extend from, .or open through, a partition, R, going transversely across the bore of the said outer nozzle, such borev at its rear end being closed by a screwplug, B. Connected with the nozzle C is the valve-case S, provided with an induct, E. Within the said case are two chambers, b c, that are separated by a' partition, d, through which is an opening, e, and a valve-seat, f,

surrounding it. The induct leads into the lower chamber c only, from which there is a passage, g, which opens into that part ofthe bore of the outer nozzle which is between the A partition It and the screw-plug B. From the upper chamber b another passage, h, leads directly into that part of the bore'of the nozzle O which is iu advance o't' the partition It.

'Furthermore, within the chamber b, and to fit to the valve-seat thereof, there is a valve, T,'on the end of a spindle, U, such spindle being provided with a handle, V. The spindlerscrews intoa neck, W, which projects upward from the valve-case. On turning the lhandle one way the valve will be raised or lifted oft' itsseat, and by revolving the spindle the opposite way the valve may be forced down upon its seat.

From the above it will be seen that, while the valve is closed upon its seat, no steam can pass' from the induct into that part of the nozzle G'which is in advance of the partition R,tl1ougl1 the steam may be flowing from the chalnber c into that part of the bore of the nozzle C which is in rear of the said partition, and thence into and through the inner nozzle.

The semcircular gate is shown at X as eX- tending down from the valve concentrically therewith, the seat for such gate being shown' at Y, the passage g leading from such seat.

I do not herein claim the internal and external nozzles provided with inducts, and combined with a cock, all as represented in the United States PatentNo. 157,105; nor

do I claim the injector described and claimed in my aforesaid application for a patent, as in making my present invention I have combined with the lifting-valve otl such a semicircular gate and its sea-t to regulate the tlowage ot steam into the internal nozzle; there- 

